Global Patent Index - EP 1021333 A1

EP 1021333 A1 2000-07-26 - VARIABLE PITCH MARINE PROPELLER

Title (en)

VARIABLE PITCH MARINE PROPELLER

Title (de)

VERSTELLPROPELLER FÜR WASSERFAHRZEUGE

Title (fr)

HELICE MARINE A PAS VARIABLE

Publication

EP 1021333 A1 (EN)

Application

EP 98953374 A

Priority

  • US 9821398 W
  • US 94902197 A

Abstract (en)

[origin: WO9919208A1] A modular variable-pitch marine propeller system (10) has a propeller unit (16) for mounting on a drive shaft (20), and a power unit (14) including a stationary annular hydraulic cylinder (32) for operating the propeller unit, a hydraulic remote control unit (18) being fluid-coupled to the power unit. An annular piston (34) of the hydraulic cylinder is coupled to a ring-shaped actuator yoke (40) by a roller thrust bearing (44), the actuator yoke axially displacing a ring-shaped rack member (70) of the propeller unit (16) with which the actuator yoke (40) is allowed to rotate. The ring-shaped rack member (70) carries a plurality of rack sections (72) by which it engages the pinions (66) mounted on the stem portions (68) of each blade member (64). The piston (34) operates in a sealed environment for the exclusion of water from the separately sealed surfaces of the cylinder itself. In one configuration, the propeller unit is replaceable without disturbing the sealed environment of the annular piston. The control unit includes a hydraulic control cylinder (90) that is operated by a rotatably mounted barrel (96) that engages a threaded piston rod (94). Alternatively, the control cylinder is actuated by a lever (120) having biasing springs (128) and an adjustable brake (136).

IPC 1-7 (main, further and additional classification)

B63H 3/08; B64C 11/42

IPC 8 full level (invention and additional information)

B63H 3/08 (2006.01); F03D 7/02 (2006.01)

CPC (invention and additional information)

B63H 3/08 (2013.01)

Citation (search report)

See references of WO 9919208A1

Designated contracting state (EPC)

BE DE ES FI FR GB IE IT NL SE

EPO simple patent family

WO 9919208 A1 19990422; AU 1076899 A 19990503; AU 746685 B2 20020502; CA 2303922 A1 19990422; CN 1109623 C 20030528; CN 1275111 A 20001129; EP 1021333 A1 20000726; JP 2001519289 A 20011023; NO 20001834 A 20000407; NO 20001834 D0 20000407; US 5967750 A 19991019; US 6276898 B1 20010821

INPADOC legal status


2004-06-09 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031205

2002-09-04 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020717

2000-07-26 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000510

2000-07-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE DE ES FI FR GB IE IT NL SE